INTERSTATE 710
INTERSTATE 710 in 07-La-710-17.58-Sgt, Los Angeles County, California received a condition grade of B (61/100). Built in 1957, the bridge carries 223K vehicles daily on INTERSTATE 710 over Up RR.
INTERSTATE 710 carries a B on the BridgeSafety Condition Score with 61/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1957 and is now 69 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. INTERSTATE 710 carries an average daily traffic count of 223,000 vehicles, with 8 lane(s) crossing Up RR. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
INTERSTATE 710 is a 69-year-old bridge located 07-La-710-17.58-Sgt in Los Angeles County, California. The bridge carries INTERSTATE 710 over Up RR with 8 traffic lanes, handling approximately 223K vehicles per day. Built in 1957, the structure spans 14.6 meters.
The bridge received a Condition Grade of B (61/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 5/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
INTERSTATE 710 has a Condition Score of 61/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 5/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 710 was built in 1957, making it 69 years old. The average bridge age in the United States is 48 years.
INTERSTATE 710 carries approximately 223K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 14.6 meters long and located on INTERSTATE 710 in 07-La-710-17.58-Sgt, Los Angeles County, California.
No, INTERSTATE 710 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
INTERSTATE 710 is located 07-La-710-17.58-Sgt in Los Angeles County, California. The bridge carries INTERSTATE 710 over Up RR. Its coordinates are 33.937378, -118.172831. It is maintained by State Highway Agency.
INTERSTATE 710 carries INTERSTATE 710 over Up RR. The bridge is 14.6 meters long and was built in 1957.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.